[Extensions] Remove the Infobar API

chrome/browser/extensions/extension_view_host.cc

Index: chrome/browser/extensions/extension_view_host.cc
diff --git a/chrome/browser/extensions/extension_view_host.cc b/chrome/browser/extensions/extension_view_host.cc
index 4650159daafdd8731a01d19e607950481e75d9fe..40e88d6c4e45242f0ed00ee3d94659205e0870e1 100644
--- a/chrome/browser/extensions/extension_view_host.cc
+++ b/chrome/browser/extensions/extension_view_host.cc
@@ -63,7 +63,6 @@ ExtensionViewHost::ExtensionViewHost(
       associated_web_contents_(NULL) {
   // Not used for panels, see PanelHost.
   DCHECK(host_type == VIEW_TYPE_EXTENSION_DIALOG ||
-         host_type == VIEW_TYPE_EXTENSION_INFOBAR ||
          host_type == VIEW_TYPE_EXTENSION_POPUP);
 }
 
@@ -105,13 +104,6 @@ void ExtensionViewHost::OnDidStopLoading() {
   view_->DidStopLoading();
 }
 
-void ExtensionViewHost::OnDocumentAvailable() {
-  if (extension_host_type() == VIEW_TYPE_EXTENSION_INFOBAR) {
-    // No style sheet for other types, at the moment.
-    InsertInfobarCSS();
-  }
-}
-
 void ExtensionViewHost::LoadInitialURL() {
   if (!ExtensionSystem::Get(browser_context())->
           runtime_data()->IsBackgroundPageReady(extension())) {
@@ -314,12 +306,4 @@ void ExtensionViewHost::Observe(int type,
   ExtensionHost::Observe(type, source, details);
 }
 
-void ExtensionViewHost::InsertInfobarCSS() {
-  static const base::StringPiece css(
-      ResourceBundle::GetSharedInstance().GetRawDataResource(
-      IDR_EXTENSIONS_INFOBAR_CSS));
-
-  host_contents()->InsertCSS(css.as_string());
-}
-
 }  // namespace extensions